Metrohm NIRS XDS Process Analyzer – MicroBundle - Manual (Page 37)

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A suitable wrench is the NC-100 with 5/16” (about 8mm) head, made by Seekonk Manufacturing
Co., Seekonk, MA 02771, USA. Remove caps from unused channels to facilitate access, then replace
caps. The head on the NC-100 is large, and may be hard to turn if caps are not removed before use.
Manual section 14.0 explains disassembly of lens barrel from the fiber bundles. In many cases the
lens barrel is mounted first, then the fiber is inserted, to minimize stress on the fiber bundle assembly.